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A new adaptation strategy of I/O link equalizers is presented based on minimizing the bit error rate (BER) as the objective function to maximize the receiver voltage margin. The adaptation strategy is verified in a 90-nm test chip on both the transmitter finite-impulse response filter (Tx-FIR) and the receiver decision-feedback equalizer (Rx-DFE). The performance is compared with the commonly used...
Signal integrity issues such as inter-symbol interference (ISI) limit the maximum data rates achievable on off-chip interconnect. Sophisticated equalization techniques must be used to mitigate the impact of ISI in order to achieve multi-gigahertz data rates. Conventional methods minimize ISI either at the data sampling time (Stojanovic, 2006) for better signal to interference ratio (SIR) or at the...
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